A speed skater goes around a turn that has a radius of 26 m. The skater has a speed of 16 m/s and experiences a centripetal force of 460 N. What is the mass of the skater?
here by using the formula
F = m * v^2 / r
F = centripetal force = 460 N
m = mass of skater
v = speed = 16 m/s
r = radius = 26 m
put these values in the formula
460 = m * 16 * 16 / 26
m = 46.718 kg
so the mass of the skater is 46.718 kg
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In short-track speed skating, the track has straight sections
and semicircles 16 m
in diameter. Assume that a 64kg
skater goes around the turn at a constant 11m/s
.
Part A
What is the horizontal force on the skater?
part B
What is the ratio of this force to the skater's weight?
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